Spitfire Mk V - The Propeller
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- Опубликовано: 30 июл 2024
- Take an in-depth look at the Spitfire’s Propeller. We cover the Rotol and De Havilland Props. We shall refer to the Air Ministry Manuals and show my relevant re-worked colour AP diagrams.
Textual extracts from Air Ministry Air Publications are Crown Copyright and transcribed with the kind permission of the National Archives, London. All colour diagrams are based on original Air Ministry Air Publications mono illustrations and transcribed into colour by Bryan Atkinson with the permission of the National Archives, London.
Thanks must also be given to the following superb organisations for their kind support when Bryan Atkinson originally developed The Spitfire Mk V Explored PC CD-ROM back in 2005, all are listed below and are included once again in this series of videos.
Spitfire Mk.Vb, AB910. The Battle of Britain Memorial Flight.
Spitfire Mk.Vb, BL614. Royal Air Force Museum, London.
Spitfire Mk.Vb, BM597. The Historic Aircraft Collection.
Spitfire Mk.Vb, EP120. The Fighter Collection.
Spitfire Mk.Vc, AR501. The Shuttleworth Collection.
The Imperial War Museum, Duxford.
The Rolls-Royce Heritage Trust.
The National Archives, London.
The material contained in this video is intended for historical, reference and entertainment value only, and is not to be construed as usable for aircraft or component restoration, maintenance, or use.
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Table of Contents:
00:00 - Introduction
00:34 - Engine Drive Shaft
01:03 - Rotol RX5/10 Propller
03:18 - Jablo Wood Blades
04:40 - AX6/1 Governor Unit
05:46 - CSA Propeller Spinner
06:24 - Locking the Spinner
07:56 - The 5/39 de Havilland Propeller
09:03 - AX6/1 Governor Unit Operation
11:04 - Blade Pitch
12:12 - de Havilland Spinner
12:21 - Locking the Spinner
13:19 - Propeller Spider
13:37 - Propeller Hub
13:46 - Counterweights
14:49 - Packing of Propeller
15:11 - Packing of Spinner
15:47 - Ground Crew Propeller Tools
Having recently visited Duxford I swear every time I hear the engine start on these videos I can smell the distinctive aroma !
Another great video where I have learnt something new , many thanks for putting these together.
Thank you very much!
What an amazing series of detailed information told in a logical and easy to follow format. Thanks! Feel like I could hold my own in a Spit.
Thanks, glad you enjoyed it!
These are very interesting videos
Glad you like them!
A gentleman I know who flew the Mark V in 1944 told me how they would find the Rotol propellors of their squadron aircraft “swapped” with the inferior De Havilland type which equipped the aircraft of a fellow squadron in their wing. Suffice to say, it didn’t please the pilots in his squadron very much!
Interesting. Thanks for watching
Another great super detailed video!
Thanks for watching!
"Leading edge technology". 👍🙂 Very appropriate! 1:30
Nice one! Thanks for watching
brilliant video again. I look forward to your treatment of the Lancaster!
Thanks for watching!
Brilliant detailed set of videos. I am still however confused as to when and why one would use the throttle lever and or the airscrew lever? I'm a glider pilot not a power pilot but still interested. A simple explanation would be really helpfull. Thanks
With the introduction of Propeller variable pitch units, the airscrew control lever was used by the pilot to select the pitch required by either moving the lever fully back fine for the D H Propeller or fully forward for the Rotol propeller.
I believe early Mk Vs built at the CBAF used the earlier 10'9" variant of the Rotol (with corresponding rounded, blunt spinner) as used by the Mk IIA, before moving to the 10'3" Jablo type with broad root and pointed spinner?
Thanks for info
Brilliant presentation. Thanks ! I am looking for any info on the spinner for a 3 blade Hydromatic installation on a Spitfire. I would like to scan and CAD model the whole thing.
Glad it was helpful and thanks for watching.
Thank you very much, I enjoyed your explainations alot, however I have a question, - if the propeller rpm causes the blades pitch to change due to centrifugal forces opening a valve to allow oil to push a cylinder, then how does the "airscrew control" lever in the cockpit work? Does it just increase the propellors pitch or does it set the blades range of pitch lower while reducing throttle or what is happening and how?
Thank you very much.
The Airscrew Control Lever for the de Havilland 20° or Rotol 35° constant speed airscrew is fitted on the throttle quadrant.
The de Havilland 20° airscrew has a Positive Coarse Pitch position which is obtained in the extreme aft position of the control lever, when the airscrew blades are held at their maximum coarse pitch angles and the airscrew functions as a fixed airscrew. Some aircraft are fitted with a De Havilland hydromatic propellor. Thanks for watching.
Were they interchangeable? Any performance difference between them? Very interesting video.
Yes, they fitted to the same No. 5 Engine Shaft. Thanks for watching
Great presentation. So, the ROTOL pitch range is 30 to 64 and the de Havilland range is 34 to 54. That seems like quite a difference, especially toward the course range for the ROTOL. Was the ROTOL propeller able to be used effectively on higher power engines than the de Havilland? The ROTOL blades also looks like they are of greater surface area than the de Havilland blades, at least to my eye.
The info in the video is all I have at the moment. Thanks for watching
How ironic that all the propeller blades on modern restored spitfires are made in Germany!
Thanks for watching!